diff --git a/homeassistant/components/modbus/climate.py b/homeassistant/components/modbus/climate.py
index 3a835f79c55..622308444f6 100644
--- a/homeassistant/components/modbus/climate.py
+++ b/homeassistant/components/modbus/climate.py
@@ -5,11 +5,8 @@ from datetime import datetime
 import struct
 from typing import Any
 
-from homeassistant.components.climate import ClimateEntity
-from homeassistant.components.climate.const import (
-    HVAC_MODE_AUTO,
-    SUPPORT_TARGET_TEMPERATURE,
-)
+from homeassistant.components.climate import ClimateEntity, ClimateEntityFeature
+from homeassistant.components.climate.const import HVAC_MODE_AUTO
 from homeassistant.const import (
     ATTR_TEMPERATURE,
     CONF_NAME,
@@ -63,6 +60,8 @@ async def async_setup_platform(
 class ModbusThermostat(BaseStructPlatform, RestoreEntity, ClimateEntity):
     """Representation of a Modbus Thermostat."""
 
+    _attr_supported_features = ClimateEntityFeature.TARGET_TEMPERATURE
+
     def __init__(
         self,
         hub: ModbusHub,
@@ -73,7 +72,6 @@ class ModbusThermostat(BaseStructPlatform, RestoreEntity, ClimateEntity):
         self._target_temperature_register = config[CONF_TARGET_TEMP]
         self._unit = config[CONF_TEMPERATURE_UNIT]
 
-        self._attr_supported_features = SUPPORT_TARGET_TEMPERATURE
         self._attr_hvac_mode = HVAC_MODE_AUTO
         self._attr_hvac_modes = [HVAC_MODE_AUTO]
         self._attr_current_temperature = None
diff --git a/homeassistant/components/modbus/cover.py b/homeassistant/components/modbus/cover.py
index a01f732ef13..62344f470c4 100644
--- a/homeassistant/components/modbus/cover.py
+++ b/homeassistant/components/modbus/cover.py
@@ -4,7 +4,7 @@ from __future__ import annotations
 from datetime import datetime
 from typing import Any
 
-from homeassistant.components.cover import SUPPORT_CLOSE, SUPPORT_OPEN, CoverEntity
+from homeassistant.components.cover import CoverEntity, CoverEntityFeature
 from homeassistant.const import (
     CONF_COVERS,
     CONF_NAME,
@@ -59,6 +59,8 @@ async def async_setup_platform(
 class ModbusCover(BasePlatform, CoverEntity, RestoreEntity):
     """Representation of a Modbus cover."""
 
+    _attr_supported_features = CoverEntityFeature.OPEN | CoverEntityFeature.CLOSE
+
     def __init__(
         self,
         hub: ModbusHub,
@@ -73,7 +75,6 @@ class ModbusCover(BasePlatform, CoverEntity, RestoreEntity):
         self._status_register = config.get(CONF_STATUS_REGISTER)
         self._status_register_type = config[CONF_STATUS_REGISTER_TYPE]
 
-        self._attr_supported_features = SUPPORT_OPEN | SUPPORT_CLOSE
         self._attr_is_closed = False
 
         # If we read cover status from coil, and not from optional status register,